Quasar
Moderator
Posts: 6124
Registered: 0800 
code:
// Slopes
{ 386, "Slope_FrontsectorFloor" },
{ 387, "Slope_FrontsectorCeiling" },
{ 388, "Slope_FrontsectorFloorAndCeiling" },
{ 389, "Slope_BacksectorFloor" },
{ 390, "Slope_BacksectorCeiling" },
{ 391, "Slope_BacksectorFloorAndCeiling" },
{ 392, "Slope_BackFloorAndFrontCeiling" },
{ 393, "Slope_BackCeilingAndFrontFloor" },
{ 394, "Slope_FrontFloorToTaggedSlope" },
{ 395, "Slope_FrontCeilingToTaggedSlope" },
{ 396, "Slope_FrontFloorAndCeilingToTaggedSlope" },
I'm afraid if you want to know how they work you'll either need to talk to SoM, essel, or look at essel's maps (learning by example) because I didn't program slopes and I don't edit maps and therefore I cannot tell you how to use them exactly.
